CVE-2017-6651 Explained : Impact and Mitigation

A vulnerability in Cisco WebEx Meetings Server could potentially allow unauthorized individuals to access customer meetings. This flaw is a result of an incomplete configuration of the robots.txt file on customer-hosted WebEx solutions.

Understanding CVE-2017-6651

This CVE involves a security vulnerability in Cisco WebEx Meetings Server that could be exploited by attackers to obtain information necessary for accessing scheduled customer meetings.

What is CVE-2017-6651?

The vulnerability arises from an incomplete configuration of the robots.txt file on customer-hosted WebEx solutions, particularly when the Short URL feature is not activated. Attackers could exploit this flaw to search for indexed meeting information and potentially join scheduled customer meetings.

The Impact of CVE-2017-6651

This vulnerability could lead to unauthorized access to customer meetings, compromising the confidentiality and security of the meetings. It affects various releases of Cisco WebEx Meetings Server, including versions 2.5, 2.6, 2.7, and 2.8.

Technical Details of CVE-2017-6651

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated attackers to gain access to scheduled customer meetings by exploiting an exposed parameter to search for indexed meeting information.

Affected Systems and Versions

Cisco WebEx Meetings Server releases 2.5, 2.6, 2.7, and 2.8 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit the incomplete robots.txt file configuration on customer-hosted WebEx solutions to search for meeting information and potentially attend scheduled customer meetings.

Mitigation and Prevention

Protecting systems from CVE-2017-6651 requires immediate actions and long-term security practices.

Immediate Steps to Take

Activate the Short URL feature on customer-hosted WebEx solutions to prevent exploitation of this vulnerability.
Regularly monitor and review access logs for any suspicious activity.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and address vulnerabilities proactively.
Educate users on secure meeting scheduling practices and the importance of maintaining secure configurations.

Patching and Updates

Ensure that Cisco WebEx Meetings Server is updated to versions that include measures to prevent this vulnerability.